TY  - JOUR
AU  - Yasuo Matsushita
TI  - Equivalence classes of Fields of 2-planes and two kinds of almost complex structures on compact four-dimensional manifolds.
JO  - Manuscripta mathematica
PY  - 1995
SP  - 409
EP  - 416
VL  - 88
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MM2_1995__88_1_156135/
ID  - MM2_1995__88_1_156135
ER  -